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CVE-2023-38546 Design/Logic Flaw

Routine
Remediate Within 6 Months

CVE Information

Original CVE data

Published:
Updated:

This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met. libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as `none` (using the four ASCII letters, no quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.

CWE:
CVSS v2-
CVSS v33.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
References
https://curl.se/docs/CVE-2023-38546.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/
https://support.apple.com/kb/HT214063
https://support.apple.com/kb/HT214057
https://support.apple.com/kb/HT214058
https://support.apple.com/kb/HT214036
http://seclists.org/fulldisclosure/2024/Jan/34
http://seclists.org/fulldisclosure/2024/Jan/37
http://seclists.org/fulldisclosure/2024/Jan/38
https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868
Affected Vendors

Haxx - (1)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Design/Logic Flaw

CVSS Scores as calculated by PRIOnengine
CVSS v25.8
AV:N/AC:M/AU:N/C:P/I:N/A:P
CVSS v37.5
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
MITRE CWE Top 25

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Exploits

No exploit code is reported to exist.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

-

Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1132 - Data Encoding

Compliance Impact

How the submited vulnerability affects compliance

-

Web Application Security Frameworks

Applicable if the issue likely affects a web application

WASC-19 - SQL Injection